Seki Kyuba KATA Knife Set (Bunka Nakiri Petty)
For the cook who craves versatility with a twist, the Seki Kyuba KATA Set with Bunka, Nakiri, and Petty is an ideal choice. The Bunka offers precision with its unique tip, the Nakiri excels at vegetable prep, and the Petty handles detailed work – all featuring VG10 steel with 3-layer construction for superior performance. The hammered finish on each blade not only adds visual interest but also enhances cutting efficiency by reducing food sticking. This set provides a perfect balance of specialized and all-purpose tools, allowing you to tackle any recipe with confidence and style.
Lifetime warranty
All three blades, covered for life.
Free UK delivery
Included on every set.
100-day returns
Cook with the whole set. Send it back if it isn't right.
Hand-finished box
Hanko-stamped certificate, 5 yen coin tucked alongside.
What's in the set
Three knives, chosen to cover a kitchen.
The Only Knives You'll Ever Need
This is a 3-piece Japanese knife set including a Bunka (18cm chef’s knife), a Nakiri (18cm vegetable knife), and a Petty (12cm paring knife) — handcrafted in Seki, Japan.
The Seki Kyuba KATA Set, featuring the Bunka, Nakiri, and Petty, is a specialised collection that caters to the discerning chef seeking unique Japanese blade shapes. This set offers a slightly more specialised chief knife in the form of the versatile Bunka, complemented by the vegetable-focused Nakiri and the precise Petty.
Each knife in this set boasts a VG10 steel core with a 3-layer construction, ensuring superior edge retention, ease of maintenance, and impressive durability. All blades feature a striking hammered finish, enhancing their functionality by reducing food sticking and adding a touch of artisanal beauty. The Bunka (18cm) offers enhanced precision with its reverse tanto tip, the Nakiri (18cm) excels in vegetable preparation, and the Petty (12cm) handles detailed tasks with finesse.
Available in Mediterranean Blue, Olive Green, and Natural Brown, this set combines exceptional performance with striking aesthetics. The handles, crafted from stabilised wood, provide a secure grip and add a touch of elegance to your kitchen arsenal.
This thoughtfully assembled set is ideal for the cook who wants to explore unique Japanese blade shapes while covering all bases in the kitchen. If you prefer a more traditional all-purpose chef’s knife, consider the Santoku, Nakiri, Petty set instead.
The Blades
The blade in the KATA line is designed to make cooking more enjoyable as cutting through produce will become an effortless task. The blade is handcrafted by skilled Japanese blacksmiths in Seki, Gifu village in Japan with high-quality VG10 high carbon stainless steel core, with a 3-layer construction. VG10 is a premium steel known for its excellent edge retention and corrosion resistance.
The sharp blade is set in a premium-cut, waterproof stabilised maple burl wood available in Mediterranean Blue, Olive Green, or Natural Brown. The knife comes in a handcrafted, minimalist wooden box wrapped in a unique illustration strip.
VG10 steel offers an excellent balance between sharpness, durability, and ease of maintenance. The blade has a Rockwell Hardness rating (HRC) of 60-62, which ensures the edge remains sharp through regular use. This means you can enjoy consistent cutting performance with minimal upkeep. The blade allows for precise, effortless cuts, enhancing your overall cooking experience.
The Handles
The beautiful handles are made with extremely limited European maple burl dyed in an Natural Brown colour and feature a subtle copper ring under the oak bog wood kakumaki (collar of the handle). The wood has to be dried for two years before it undergoes the process of stabilisation. This ensures the wood is completely waterproof to avoid bacteria growth and is able to last generations.
The blade’s kakumaki (collar) is made with oak bog wood. A wood ranging from 2,500 to 5,000 years in age. Its age and living conditions give it a unique character and rich natural colour variation determined by its age. Giving you a knife with a rich history.
The stabilised premium-cut maple burl is shaped into an octagonal shaped ambidextrous handle to give you a firm grip on the knife. Not only are the handles aesthetically pleasing, they are also perfectly balanced, light and comfortable. This allows for maximum precision and more controlled movements during use.
No two handle colours or patterns are ever the same as the natural properties of each wood block are unique and will absorb the colour dye differently. This will give each knife a beautiful unique look and it can serve as an unforgettable gift.
Because Presentation Matters Just As Much
All our Seki Kyuba KATA kitchen knives arrive in a handcrafted, minimalist European oak wooden box with a delicate waxed finish. The box is wrapped in our signature Oishya illustration strip featuring the Onna Bugeisha – legendary Japanese female warriors.
Inside, you’ll discover a beautifully designed certificate with two sides, each telling an important part of your knife’s story.
On one side, you’ll find a genuine 5 yen Japanese coin attached with an elegant note. There’s an ancient superstition that giving someone a knife is bad luck because it “cuts” the relationship between giver and recipient. The way around this? Attach a coin of symbolic value to the knife, which the recipient returns as payment.
We chose the 5 yen coin specifically because in Japanese, go en (五円) is a homophone with go-en (御縁), meaning “relationship,” “connection,” and “bond.” By exchanging this coin with the receiver, you’re not just avoiding bad luck – you’re actively strengthening your connection.
The reverse features your knife’s Certificate of Authenticity, documenting genuine Oishya craftsmanship from Japan’s legendary blade-making regions. Each certificate is hand-stamped with our traditional Japanese hanko seal – a mark of authenticity used in Japan for centuries.
The Blacksmith
The spirit of Samurai “Bushido” has never faded away from the history of Japan. The art of greatest sword smiths has been inherited through 780 years till now and it’s present in Japan’s Samurai Knife City, Seki in Gifu Prefecture, where Seki Kyuba knives are made.
High quality katana and kitchen blades are made with Japan’s traditional swordsmith technique and the latest technology, and are famed throughout the world today, especially high end kitchen knives.
Our partnership with one of the most talented and prominent blacksmiths of Japan resulted in Seki Kyuba kitchen knives, that are perfect for those that demand the highest quality. Being part of the Japanese knife community and owning a knife like this is a great honour and pleasure. We welcome you to Kyuba knives world.
The blades
Shared specifications.
| Weight | 1.7 kg |
|---|---|
| Dimensions | 45 × 10 × 6 cm |
| Knife Type | |
| Blade Length | |
| Steel Type | |
| HRC | |
| Knife Bevel | Double |
| Hand Feature | Ambidextrous |
| Handle Waterproof | Yes |
| Made in | Japan |
| Maker | Oishya, Seki Kyuba |
| Knife Handle Material |
The hands that make it
Three knives. One workshop. One standard.
Every blade in the KATA set is forged in Seki, Gifu, by the workshop we have worked with for years. Same VG10 steel, same three-layer san-mai construction, same hand-fitted bolster. The set is consistent because the maker is consistent.
Three layers around a VG10 core, hardened to HRC 60-62.
The handles are finished in Małopolska, Poland, by the same craftsmen who finish every Oishya handle: a stabilised maple burl body, a bog oak ferrule (the kakumaki), a hand-fitted copper ring, an octagonal profile. Assembled by hand, one knife at a time.
Care, briefly
Three knives. Same three habits.
01.
Hand wash all three.
Never the dishwasher. Sixty seconds at the sink, then a soft towel. Water on hard Japanese steel is the only thing that rusts it.
02.
Wood boards only.
Glass, stone and marble are harder than the steel and dull the edge in a week. End-grain hardwood is the right choice — hinoki cypress if you can find it.
03.
Sharpen on a stone.
Never a honing rod — the steel is too hard, it chips the edge. A 1000/6000 whetstone every three or four months keeps all three keen.
What you receive
In the box.
- The three knives in your set, each sharpened, oiled and wrapped in cloth.
- One hand-finished set box holding all three.
- A Certificate of Authenticity, hand-stamped with the maker's hanko, naming the smith and certifying each blade.
- A 5 yen coin tucked alongside the knives. "Go en" — the Japanese for five yen — is the homophone for luck, connection and bond. Returning the coin to the giver turns the gift into a symbolic purchase, neutralising the old superstition that a knife as a gift cuts the bond between giver and receiver.
- A care card with the sixty-second wash routine and a link to Knife School.
- Your lifetime warranty, registered to you automatically on all three blades when the order ships.
Frequently asked.
Can I swap a knife in the set?
Are all three knives under the lifetime warranty?
How do I sharpen them?
Is gift wrapping included?
How long does shipping take?
What if the set isn't right?
From the people who cook with it
Reviews.
The knife set is incredible! Each piece is perfectly crafted. The Bunka is my new favorite for precise cuts.
Outstanding knife collection! Each piece is a masterpiece. The Petty knife is particularly impressive for detail work.
